News | company news | Oct 29,2025
The photovoltaic power generation systems need monitoring at each step of the power conversion process. The power conversion process also needs protection. I check the photovoltaic power generation systems and the power conversion process.
In this system, the HYCA Series current sensor and the KCT series current transformer act like two dutiful guardians, responsible for the two major tasks of “sensing” and “measuring,” working together to ensure the safe, stable, and efficient operation of the system.
HYCA series current sensors from HEYI: real-time monitoring and intelligent protection.
I have used the HYCA-16-PD sensor in a panel project. The HYCA-16-PD current sensor is a detection module. The HYCA-16-PD current sensor monitors DC leakage detects faults in photovoltaic systems.
In my experience the device can monitor AC and DC current at the same time. When an abnormal leakage current appears in the system, such, as insulation damage the device can automatically send a trip signal in 30 milliseconds. The trip signal helps prevent shock or equipment damage.

We certify to the IEC 62752 standard and the IEC 62955 standard. The IEC 62752 standard and the IEC 62955 standard meet international safety standards, for photovoltaic EV charging piles, wind power generation and other uses.
integrated use within photovoltaic inverters .
The temperature range goes from, minus 40 to plus 85 degrees Celsius. I have tested the device in sun and, in freezing cold. The temperature range allowed the device to work.

I always run the self-test and the automatic calibration functions before I start the machine. The self-test and the automatic calibration functions simulate leakage detection before startup. The self-test and the automatic calibration functions are quick. The system stays safe and reliable before each operation.
In my experience, with photovoltaic systems the inverter is the part that matters most and also the part that can break easily. I have found that a current sensor such, as the HYCA-16-PD can monitor the insulation status of the photovoltaic system in time. I also see that the current sensor can show the insulation condition in time.
I notice that when an abnormal leakage current appears the protection mechanism activates. The protection mechanism then disconnects the inverter, from the grid. The inverter stays off the grid. The accidents are avoided.
The smart power outage manager keeps power flowing. The smart power outage manager also protects the safety of people and equipment.
The HEYI KCT series is a current transformer. The HEYI KCT series samples the current. Measures the power.
The photovoltaic system has the task of feeding back the flow of solar current, to the monitoring system. When I look at the monitoring system I see the flow displayed for the operation and maintenance staff. The operation and maintenance staff can clearly see the power generation performance of each branch. The photovoltaic system makes the performance of each branch visible, to the staff.
I can install the open-type structure with Clamp-on Design directly. I do not have to disconnect the cable when I install the open-type structure. I find the open-type structure makes maintenance easier.
I think the compact design and the fire resistant shell are safe. The compact design and the fire resistant shell have UL94-V0 certification. The compact design and the fire resistant shell keep reliability and durability. The compact design and the fire resistant shell fit photovoltaic combiner boxes or inverter interiors.
The measurement range is wide, from 5 A to 1000 A. The frequency is from 50 Hz, to 2 kHz. The measurement range and the frequency meet the needs of scenarios. The needs include household photovoltaic systems and large power plants.
I see that high insulation class (2.5kV withstand voltage) protects the device. I see that low phase error (, up, to plus or minus 60 min) gives accurate and stable measurement results for the readings.
Multiple output options (0.333V/AC or 0-500mA) facilitate connection to monitoring systems or power metering modules.
From my point of view precise management of every watt of electricity matters. HEYI KCT type current transformers can measure the generated current in time. HEYI KCT type current transformers can check if each string of modules is outputting normally. HEYI KCT type current transformers can spot problems such, as aging or loss. I rely on HEYI KCT type transformers.
The systems current eye sees the flow of energy. The systems current eye measures each bit of that energy. The systems current eye calculates the energy accurately. Optimizes it for use.
Functional components HYCA-16-PD (Current Sensor) KCT series (current transformers)
Main function Leakage detection and safety protection Current Measurement and Energy Management
Output signal High/low level digital signals Analog voltage/current signal
Installation location Photovoltaic inverter or distribution box Photovoltaic combiner boxes and distribution cabinets
Application goals Protect personal and equipment safety Optimize system efficiency and monitoring performance
When I use the photovoltaic system with the controller the photovoltaic system checks each power generation circuit to see if the current is normal. The photovoltaic system also watches for any leakage. Stops it in time.
The technology improves efficiency, for photovoltaic power plants. The technology also enhances system safety. I have seen the technology work.
I count on reliability. High reliability keeps the system operating when the temperature’s high when the humidity is high and when radiation is strong.
Compliant with international standards and certifications: Meets IEC safety requirements and is suitable for the global photovoltaic market.
I find the installation easy. The modular and hinged design makes the integration easier.
Precise and intelligent detection : Supports automatic calibration, self- testing, and digital output.
The product offers cost performance. Compared with brands the product has the same functions and the product is more competitive, in cost.
The global energy transition is speeding up. Photovoltaic PV systems are gaining popularity. The HEYI HYCA-16-PD sensor and the HEYI KCT type current transformer are the core parts that improve safety and intelligence. The HEYI HYCA-16-PD sensor and the HEYI KCT open-type current transformer work, behind the scenes.
They are not merely electronic components, but rather the nerves and senses of the PV system, making clean energy safer and more efficient.
Compay:HEYI Electrical Co., Ltd.
Brand: HEYI/ASCT
Contact: Bethy
E-mail: heyi@heyiele.com
Tel: 86-13968747975
--- END ---
Feb 04, 2026
Why is single‑phase window type current transformer so popular in the South American electricity market? —Technical Analysis Based on the South American Power Bureau’s Bidding and Outdoor Environment In countries, like Brazil, Chile, Peru and Colombia the power infrastructure construction has kept growing in recent years. The distribution network upgrades, the energy grid integration and the… Continue reading Why single‑phase window type current transformer Dominate South America’s Power Grid
Feb 03, 2026
Why have single phase satuation current transformers (CTs) become an essential core component of switchgear in Southeast Asia? — Detailed technical analysis using the ICT series encapsulated transformer as an example. We examine the ICT series encapsulated transformer. In Asian countries such, as Malaysia, Indonesia, Thailand and Vietnam the low-voltage switchgear appears a lot in… Continue reading Why Single-Phase Saturation Isolation Current Transformers Are Essential in Switchgear
Jan 22, 2026
People use Current transmitter. Why do people use transmitters, in the chillers the air compressors, the generators and the IoT systems? In systems I see chillers, in commercial buildings air compressors in factories and generators, in data centers. The chillers, the air compressors and the generators all have one thing in common. In short devices… Continue reading Why Current Transmitter Matter in Chiller, Air Compressor, and Generator